Lathe.



0. LEVIB UE.

LATHE.

APPLICATION FILED DBO.1, 1913 1,121,188, Patented Dec. 15,1914.

3 SHEETS-SHEET 2.

m; umzpm PFTED rn PHoro-Lnnn. WASHINGTON, D, r

0. LEVE UE.

LATHE.

APPLICATION FILED D110. 1, 1913.

1,121,188. Patented Dec. 15,1914.

8 s SHEETS-SHEET 3.

7/ 57??? 565. %W VKW UNITED STATES PATENT OFFICE.

CHARLES LEVEQUE, OF MONTREAL, QUEBEC, CANADA.

LATHE.

Application filed December 1, 1913.

To all whom it may concern Be it known that 1, CHARLES Lnvia UE, a citizen of the French Republic, and residing at 629 Wolfe street, in the city of Montreal,

in the Province of Quebec, in the Dominion of Canada, have invented certain new and useful Improvements in Lathes; and 'I do hereby declare that the following is a full, clear, and exact description of the same.

The invention is an improved lathe and the object of the invention is to devise a machineparticularly for the purpose of turning small articles such as special screws, bolts and the like.

A further object is to devise a machine for this purpose in which it is practically impossible for mistakes to be made in the turning after the machine has once been set. Therefore the machine can be worked by a boy or unskilled person after having been once adjusted to cut a particular shape of article.

The invention will be fully understood with the aid of the accompanying drawings in which Figure 1 shows the right hand end of the lathe in elevation and Fig. 2 the left hand end, these two views having been separated in order to show the invention on a larger scale. Fig. 3 is a plan View of the traveling carriage and adjacent parts and Fig. 4 is an end view of Fig. 3. Fig. 5 is an outer end elevation (part section) of the stop gage holder and its supporting arm, while F ig.

' 6 is an outer end elevation of a split clip forming part of the machine.

Like numerals of reference indicate correspondlng parts in each figure.

Referring to the drawings, 1 and 2 are standards forming one head of the lathe at the right hand end and 3 is a standard forming the other head, said standards being coupled by the tubular bars 4: and 5 rigidly secured at their ends to said standards.

The upper ends of the standards 1 and 2 form bearings for a driving shaft 6 upon which and between the said standards 1 and 2 is fixedly mounted the fast pulley 7,'while 8 and 9 are loose pulleys on the shaft 6 disposed one at each side of the pulley 7 10 is the chuck fixedly mounted at the inner end of the shaft 6 whose outer end also carries the fast belt pulley 11.

12 and 13 are the belt shifters pivoted at their lower ends 14 and 15 to the bases of Specification of Letters Patent.

Patented Dec. 15,1914.

Serial No. 803,989.

the standards 1 and 2 and having hook shaped parts 16 and 17 intermediate of their length.

18 is a bracket rigidly secured to the bars 4 and 5 between the standards 1 and 2 and forming at its lower end a bearing for a cross shaft 19, said shaft having the handle 20 rigidly mounted on its inner end and fingers 21 rigidly mounted intermediate of its length and engaging the inner part of the hooks 16 and 17, thus when the shaft 19 is rotated by the handle 20, the fingers 21 ioperate to push the belt shifters 12 and 13 simultaneously to one side or the other for the purpose of placing one or the other of the belts on to the fast pulleys 7 and the other belt on to aloose pulley. The belts have not been shown in the drawings, but it should be mentioned that one is an ordinary straight belt and the other a crossed belt in order that the chuck may be rotated to the right or left hand as desired.

22 is a stop lug extending rigidly from the inner end of the handle 20, said lug engag able to employ the full power from the countershaft, therefore, to reduce the power, it is proposed to make the driving belts only partly engage the pulley 7, and this is accomplished by adjusting the screw 23 to the re quired degree so that it will be engaged by the finger 22, just at the time the driving belt is only partly on the pulley 7 The bar 5 is longitudinally slotted on the under side for nearly its full length as shown at 24: and its interior is filled by a threaded shaft 25 inserted fromrthe right hand end and rotatable therein, said shaft being provided with a collar 26 at the left hand end outside of the standard 3, for preventing said shaft moving longitudinally. The right hand end is also provided with apulley 27 rigidly mounted thereon and revolubly con nected to the pulley 11 by the belt 28.

29 is a carriage having longitudinal holes 30 and 31 therethrough which fit over the tubes l and 5, thus enabling said carriage to slide longitudinally on said bars without twisting or turning in any direction.

The carriage 29 has a table like top from which extends a boss 32 in axial alinement tachable sleeve 33 which is held in place by the setpin 34 passing through the boss. 32

into abutment with said sleeve. The sleeve 33 is for guiding the work which is here rotates and slides. When the work to be operated on is of larger or smaller diameter, the sleeve 33 is removed and replaced by another sleeve whose axial hole is a corresponding diameter to the work.

37 is a tool carrier in the form of a slide straddling the boss 32'transversely movable in the slideways 38 of the carriage 29,- said transverse movement being accomplished through the medium of a screw 39 having a bearing 40 at the front end of the carrier 37 and threaded'into the boss 32near its foot, therefore when the screw 39is rotated by the handle 41, the carrier is moved'across the carriage according towhich direction the screw 39 is rotated.

42 is a lug projecting upwardly from the topsurface of the carrier 37 to the left hand side of the boss 32 and 43 is a turning'tool adjustably secured inn-said lug in a position for operating on thevwork extending through the sleeve 33. i

44 is a similarboss on the opposite side of the work and supporting a severing tool 45.

46 is a post extending laterally from the carrier 37 adjacent to the lug 44 in a direction parallel to the bar 4.

47 is a two diameter post similarly extending from the carrier 37 adjacent to the lug 42, the latter post being surrounded by a tubular casing 48 containing a spring 49 tend ng to keep said'casing pressed agalnst the carrier 37. The inner end of the casing 48is provided with a flange 50 abutting the carrier37 while the outer end is'provided with a rigid collar 51.

52 is a washer encircling the post 47 between its head and the outer end of the casing 48, said washer being provided with alug 53 engaging a corresponding notch in the outer edge of the casing 48. WVhen the washer 52 is in the position shown in the drawings, that is to say, engaging the notch in the casing 48,. the said casingfcan be moved a little outwardly against the action of the spring 49, but when, the washer 52 is rotated so that its lug 53 is' out of en gagement with the notch in the casing the said washer will abut the head of the post i 47 thus preventing any outward movement of the casing 48.

54 is an arm loosely pivoted at one end on thepost 46 and atthe other end resting on the casing 48 inward of the collar 51, said arnrsupporting intermediate of its length a stop gageholder 55 having a bearing lnsaid arm with ratchet teeth on its terial to be cut as will be hereinafter more fully explained.

60 is a trip lever pivotedintermediate of,

its length to'the front edge of the carriage 29 (see Fig. 2) its upper'e'nd abutting the outer 'surface'of the flange 50 of thecasing 48. j I

' 61 is a catch lever'pivoted at its upper end also to the'front edge of the carriage 29 and having a hooked lower end 62. The lower end of the lever, 60 i'sfcoupled to the catchleverfll intermediate of its length by a link 63 and a spring 64 keeps the lever;

61 pressed to the left hand and the lever 60 in engagement with the flange, 50.

65 is an arm pivoted at onev end to a lug 66 depending from the rear of the carriage at its lower endand extending forwardly into engagement with the hook 62 at the lower end of the lever 61,-said arm having the finger 67 intermediateof its length projecting through they hole 68 in the adjacent part of the carriage 29 and through the slot 24 in the tube 5 into engagement with the thread of the shaft 25. It will be seen that the rotation of the shaft 25 will,v

through the medium of the finger 67, cause the whole carriage 29 and the parts it supports to be moved alongthe bars 4 and 5, the rod 35 at this time sliding in the sleeve 33 until it abuts one of the gages 58 which has the effect of pushing the stop gage holder 55 with its arm 54 along the post,

46 a short distance and correspondingly i;

pressing on the collar 51 and pulling out the casing 48 until its flange 50 trips the lever 60 and releases the hooked end 62 of the lever 61 from engagement with the I arm 65. which latter falls and'takes its fln-i ger 67 out of engagement with the thread 58, ready to be operated on by the cutters,

ire

of the shaft 25, thus causing the carriage Y to stop. -The required length of work now fextends between the boss 32 and the gage it being understood that the rod of work 35 isstill rotating. The handle 41' is now turned in the direction to slide the carrier 37 forward to bring the cutter 4-2 into operation on the work. The correct distance to move forward the carrier for this operation is regulated by one of the adjustable screws 69 and 70 threaded into an upward extension 71 at the front end of the carrier 37 wh'oseen'ds are adapted to abut against a movable stop 72. This movable stop is in the form of a lever pivoted to the boss 32 in a manner permitting it to be swung aside to form an abutment for the screw 69 or the screw 70 and the depth of the cut on the work will be regulated by the set of these screws.

Two similar stop screws 73 and 74 are threaded into a wall 75 at the opposite side of the carrier 37 to come into abutment with a movable stop 76 pivoted to the boss 33 in a similar manner to the movable stop 72. When the stop 76 is moved over to one side and the handle 41 rotated to bring the slide 37 forward, the screw 74 will abut the stop 76 and arrest the movement of the slide or carrier 37 and in this position one of the gages 58 is in alinement with the rod of work 35. This is the correct position of the parts when the whole carriage is traveling by the shaft 25 and after the work has been turned as hereinbefore explained,

the stop 76 is thrown over to the opposite side which allows the slide 37 to be traversed a little farther forward as the abutment is removed from the stop 74 and during this extra movement the severing tool as comes into operation on the work and by the time the screw 73 reaches the stop 76 the turned article has been severed from the rod.

It is sometimes necessary to drill the end of an article or provide a countersink and this is the purpose of the drill 59 and its operation will now be described. 77 is a split clip clamped to the bars 4: and 5 by the clamping screw 78 having a flat upper surface with a lateral extension 79 to the extremity of which is pivoted a hand lever 80 pivotally connected intermediate of its length to the carriage 29 by a link 81.

If it is desired to drill the work, the handle ll is rotated until a stop screw 82 threaded into a laterally projecting lug 83 from the slide 37 engages a movable abutment 84: pivoted at one end to the top surface of the carriage 29, then the handle 80 is moved to the right hand side which has the effect of pushing the whole carriage.

along and drilling the work as required. In order to be able to move the slide 37 farther forward to bring the cutting tool L3 into operation, the abutment 84 must be swung to one side. After two or three articles have been made the clip 77 must be loosened by the handle 73 and moved along to follow up the carriage 29.

If it is desired for any reason to lock the carriage 29 against travel, this can be accomplished by swinging over the handle 85, having a screw 86 which is threaded through a lug 87 on the carriage into abutment with the surface of the bar 5. On the other hand, if it is desired to lock the tripping arrangement so that thecarriage will continuously travel, the Washer 52 on the post 47 is rotated as hereinbefore explained so as to take its lug 53 out of engagement with the notch in the end of the casing 48 which has the eifect of preventing the casing moving outwardly and thus preventing the operation of the tripping levers.

After each article has been produced and severed from the rod 35, it falls out of the machine and the next length of rod is brought into position by pushing up the arm 65 until it is caught by the hook 62, then the carriage is traversed as hereinbefore explained.

88 is a rearward extension of the carriage 29, said extension supporting a bracket 89 in which is pivoted a lever socket 90, said socket being adjustable along the pivot 91 by a set pin 92.

93 is a lever clamped into the socket '90 by a pin 94 and provided at its outer end with a handle 95 and intermediate of its length with a boss 96 having an orifice therethrough in which a detachable tool 97 is clamped by the pin 98. If it is desired to knurl the article being produced, the tool 97 may be a knurling tool and the lever 93 is brought forward to bring the tool 97 into operation on the work. The angle at which the tool 97 engages the work may be regulated by twisting the lever 93 in the socket 94 and the particular point in the length'of the article at which the tool 97 operates may be regulated by moving the socket along the pivot 91.

IVhat I claim is: e

1.' In a lathe, a frame, a chuck and means for rotating said chuck at one end of the frame, a carriage adapted to travel on said. frame toward said chuck, a tool carrier mounted on said carriage, a traversing screw and means operatively connecting said screw with the chuck rotating n1eans,a lever carried by said carriage and engaging said screw and trip devices causing the disengagement of said lever and consequent stoppage of the carriage after traveling a predetermined distance.

2. In a lathe, a plurality of standards,a pair of parallel horizontal bars supported by said standards, a chuck and means for rotating said chuck, a traversing screw within one of said bars and means for driving same from the chuck rotating means, a carriage adapted to slide on said pair of bars, a tool holder mounted to slide transversely on said carriage, means for guiding the work from said chuckto said tool holder, hand operated means for traversing said 'tool holder, an arm carried by said carriage and having a finger passing through a longitudinal slot in one of said bars into engagement with said traversing screw and means for automatically releasing said arm and consequently stopping the travel of said carriage consequent upon a predetermined length of work being in position within said tool holder.

3. In a lathe, a pair of parallelhorizontal bars suitably supported, one of said bars being hollow and longitudinally slotted, means for supporting said bars atthe ends, a chuck. adapted tosupport a rod of work,

means for rotating said chuck at one end of said bars, a traversing screw adapted torotate within said slotted bar, means for rotating. said screw with said chuck, a carriage .slidably arranged on said bars and having means for guiding said rod ofwork, a tool holder slidable transversely on said carriage, hand means for sliding said tool holder, a stop gage supported by said tool holder, and trip devices for releasing said carriage from said traversing screw and causing its stoppage consequent on said rod ofwork abutting said stop gage.

. 4;. In a lathe, a pair of parallel horizontal bars suitably supported, one of said bars being hollow and longitudinally slotted, means for supporting said bars at the ends, a chuck adapted to support a rod of work, means for rotating said chuck at one end of said'bars, a traversing screw adapted to rotate-within said slotted bars, means for rotating said screw with said chuck, a carriage slidably arranged on said bars and having means for guiding said rod of work, a tool holder slidable transversely on said carriage, hand means for sliding said tool holder, a plurality of adjustable stops limiting the forward and rearward travel of the tool holder, a stop gage supported by said tool holder, and trip devices for releasing said carriage from said traversing screw and causing its stoppage consequent on'said rod of work abutting said stop gage.

5. In a lathe, a pair of parallel horizontal bars suitably supported, one of said bars being hollow and longitudinally slotted, means for supporting said bars at the ends, a chuck adapted to support a rod of work, means for rotating said chuck at one end of said bars, a traversing screw adapted to rotate within said slotted bar, means for rotating said screw with said chuck, a carriage slidably arranged on saidbars and having means for guiding said rod of work, a tool holder slidable transversely on said carriage, hand means for sliding said tool holder, a'plurality of adjustable stop gages one of which is set to abut said rod of work, an arm supporting said stop gages, a levercarried by said carriage and having a finger passing through the slot in said hollow bar into engagement with said traversing screw and trip devices operated by said arm tocausethe release of said lever from said traversing screw consequent on said stop gage abut- Jtmg the work. v

6. In a lathe, a pair of parallel horizontal bars suitably supported, one of said bars being hollow and longitudinally slotted, means for supporting said bars at the ends, a chuck adapted to supporta rod of work,

means for rotating said chuck at one end of carried by said carriage and having a finger passing through the slot insaid hollow bar into engagement with said traversing screw and trip devices operated by said arm to cause the release of said lever from said traversing screw consequent on said stop gage abutting the work, a drill carried by said stop gage arm, an adjustableremovable stop between said tool holder and carriage regulating the position of said drill in relation to the work, a lever suitably and nonslidably carried by said bars and a link connecting said lever and Said carriage whereby the latter can be movedto bring said drill into operation on the work when the carriage is released from the traversing screw.

7. In a lathe, a pair of parallel horizontal bars suitably supported, one of said bars being hollow and longitudinally slotted, means for supporting said bars at the ends, a chuck adapted to support a rod of work, means for rotating said chuck at one end of said bars, a traversingscrew adapted to rotate within said slotted bar, means for rotating said screw with said chuck, a carriage slidably' arranged on said bars and having means for guiding said rod of work,'a tool holder slidable transversely on said carriage, hand means for sliding said tool holder, a stop gage supported by said tool holder, and trip devices for releasing said carriage from said traversing screw and causing its stoppage consequent on said rod of work abutting said stop gage, alever pivotally supported from said carriage and extending rightangularly to the rear thereof, a tool adjustably supported in said lever and adapted to contact the work when the lever is thrown over and means for adjusting said lever in relation to its support.

8. In a lathe,'a pair of parallel horizontal bars suitably supported, one of said bars being hollow and longitudinally slotted, means for supporting said bars at the ends, a chuck-adapted tosupport a rod of work, means for'rotating said chuck at one end of said bars, a travers ng screw adapted to rotate within SELld'SlOiLtGCl bars,

means for rotating said screw with said chuck, a carriage slidably arranged on said bars and having means for guiding said rod of work, a tool holder slidable transversely on said carriage, hand means for sliding said tool holder, a pair of posts extending parallel with the work from said tool holder, one of said posts having a tubular casing resiliently slidable thereon and a flange at one end, an arm pivoted at one end to the other of said posts and engaging a collar on said casing, a stop gage holder supported intermediately on'said arm and rotatable in one direction only, a set of stop gages adjustably supported in said gage holder, an arm pivotally supported at one end to said carriage and adapted to engage said traversing screw to cause the travel of the carriage and trip levers supported by said carriage and operated by said spring casing to release said traversing screw arm when one of said stop gages abuts the work.

Signed at Montreal, Quebec, Canada, this sixteenth day of September, 19 13.

CHARLES LEVEQUE. lVitnesses:

M. V PATENAUDE, C. PATENAUDE.

Copies of this patent may be obtained for five cents each, by addressing the Gornmissioner of latents,

Washington, I). C. 

